Squeeze riveter



fi y 1929. c. H. PECK 7 1,721,279

SQUEEZE RIVETER Filed Feb. 15. 1927 INVENTOR. dazl'dfilPc-cjn.

H/TS ATTO EY.

i 55 end a head P control the outlet opening Patented July 16, 1929.

UNITED; STATES 1,721,279 PATENT OFFICE.

cAIDJI. rEcK,oE WAVERLY, NEW YoRK, ASSIGNOR T INGERSOLL-RAND COMPANY, orJERsEY crrY, NEW JERsEY, A CORPORATION on NEW JERSEY.

saUE zE RIVETER.

Application filed rebmar is', 1927. Serial No. 168,363. 1

This invention relates to riveting devices, but more particularly to asqueeze r veter in which the rivet sets or dies are disposed inrelatively moving jaws adapted to be 5 actuated by suitable levers towhich they may be secured. Preferably, one of the levers is secured infixed position .and the other lever pivoted thereto, suitable pressureresponsive devices being provided for actuating the movable lever.

The object of the invention is to produce a mechanism which will bothhold the rivet tin the work and also set the rivet.

. Other objects will appear hereinafter, and to all of these ends theinvention consists of the combination of elements and arrangement ofparts substantially as hereinafter described and claimed and illustratedin the accompanying drawings, in which Figure 1 is a longitudinalsectional elevation of a riveter constructed in accordance with thepractice of the invention,

Figure 2 is a transverse elevation taken through Figural on the line 22looking in the direction indicated by the arrows, and

Figure 3 is a transverse view taken through Figure 1 on the line 3-3looking in the direction indicated by the arrows.

Referring to the drawings, the invention comprises a cylinder A havingan integral lateral guard B. Within the cylinder A is disposed a pistonC intended to be exposedonly at one end to pressure fluid. Such pressurefluid may be conveyed to the cylinder through a passage D leadingthrough the cylinder to communicate with a passage E in a handle F. Thehandle F in this instance also has another passage G to which pressurefluid may 'be conveyed directly 40 from a suitable source of supply (notshown) byany suitable means. The sages E and G are separated by a wall Hhaving a port J to afiord" communication between the said passageaE andG. The port J 'is controlled by a throttle valve K which may seat on atapered valve seat L at the end of the port J adjacent the passhge G. Inadditionto the function of controlling the admission of pressure fluidvto the cylinder A, the throttle valve K also controls the exhaust ofpressure fluid from the cylinder. To this end the throttle valve isprovided with a stem 0 carrying at its outer .nected to the piston Q ofa port R in the handle F. The stem 0 may be relieved in any suitablemanner to establish communication between the passage E and theatmosphere when the throttle valve K is closed. In the present instance,longitudinal grooves S are formed on the stem between the valve K andthe head P for that purpose.

' A means for unseatingthe throttle valve K is provided in the form of alever T pivoted on a pin U which extends through the handle F,- and apin V also' extending through the handlcF cooperates with a lip or.extension TV onthe lever T for holding the lever T in proximity with thestem 0 of the throttle valve K. A spring X acting against the throttlevalve K holds said valve firmly on the seat L and also serves to closesaid throttle valve after the lever T has been released by the operator.

At the upper end of the cylinder is secured a lever Y by means ofsuitable bolts pins Z. The lever Y is preferably secured fixedly to thecylinder and is provided at its outer or free end with a jaw 12- whichhas an aperture 0 to receive a holding die a? which may be of anysuitable form to receive the head of a rivet 6.

At the juncture of the b and the body portion of the lever Y is disposeda pivot pin f to act as a pivot for a' movable or oscillatory lever g.The lever g is thus adapted to oscillate with respect to the lever Yand, like the lever Y, also has a jaw b which carries a setting die h.The setting die in this instance is provided with a suitable conicalprojection j intended to project into the rivet e for spreading theshell portion of the rivet against the work,-

such as the plates in.

The body portion 0' of the lever "g is preferably of a length to enableits inner end to extend substantially to the center of the cylinder A.The inner end of the lever g is provided with a pin p on which ispivoted a connecting rod g which con-neetsthe lever g with the piston O,the opposite end of the connecting rod being pivotally con- Suitablemeans are provided for retracting the piston /C after the pressure fluidhas been exhausted from the cylinder A. To that end a pair of springs sare interposed between the piston and a spring plate t by means ofa;wrist 1. preferably seated on the lever Yin order that they may bereadily accessible for the purpose of inspection and replacement. In

order to prevent the springs s from deflect- ,ing when they aredepressed, guide pins u are riveted to the spring plate't to guide oneend of the said springs. -The op osite ends 'of the springss are suitablgu1 ed by tubularguides '0, the" bores 0 which are of a diameter toenable the guide pins u to pro; jecttherein when the piston is actuatedI close the jaws b.

In the'operation of the device, after the 1 rivet c has been placed inposition in the work or plates is, the riveter may be placed .in suchposition with respect to the rive that the holding die at will abut thehead of the rivet. With the riveter in this position, the die h will beapproximately in the correct position to permit the projection j toenter the aperture in the rivet u. If then i the throttle valve isopened the pressure fluid flowing into the c linder A will actuate thepiston C in the irection of the stationary leverY, thus forcing theprojection 1' into the rivet andspreading or setting the rivet againstthe work.

After the rivet has been set, the throttle I? lever T may be released,thus enabling the springX close the throttle valve K and to the pistonat the same time to place the cylinder A in communication with theatmosphere through the passages D and E and the grooves R in thethrottle valve stem 0.

Immediately upon the exhaust of pres sure fluid from'the cylinder, thespring 8 will retract the piston 0, thus openingthe jaws b in readinessfor the succeeding operation.

I claim:

A squeeze riveter, comprising a cylinder, a plston 1n the cyl nder, alever secured to one end of the cylinder, a movable lever,

means pivot'ally connecting the levers near.

their outer ends, riveting dies carried by the outer. ends of thelevers,'a connecting In testimenymhereof I have signed thisspecification;

.CAID H. PECK.

